Machine for forming sheet-metal barrels.



W. B. GODDARD. MACHINE FOR FORMING'SHEET METAL BARRBLS.

APPLIGATIONI'ILBD APB,.15, 1911.

Patented Apr. 8, l1913.

2 SHEETS-SHEET l.

In venltr:C

Atty

W. B. GODDARD. MACHINE PQR FOBMING SHEET METAL BARRELS.

APrL'ruxrIoN 'TILED $3.15, 191i.

' Patented Apr.8,1913. l

www@ 2 SHEETS-SHEET 2.

. .l y Inventor:l

f'i repair.

STA@

l WILLIAM B. eonnann, Aor NEW `ironie'infie. Vif

To .rulli/hom t may concern? ,l l lle it known that l', firman llGoDDaRm a citizen `of the lnited States, anda resident-A of the city of New York, borough ofy Brooklyn, county of Kings, and Strategofy Newl ork, have inventedcertain new and use'iul' lniproi'enients in Machinesvor Forming Sheet-Metal Barrels, of which the, following is a specification. 5

rthis invention relates to forming the body. portions of nietalhilgebarrels. i

Metal containers ofthe well-known barrel forni are well knowntobe .'p-i'eferable to` the cylindrical container or drunnloutl `View of the fact that the body ,portion of a metal bilge-barrel must kbe shaped from a single blank which is first made 'intolCy the desired form. Incidental to the above,- have particularly in View expandingandforming .mechanism which leaves the eiiterior of the blank exposed to View duringithev forming operation, wherebyV the expanding operation may be terminated at any stageI of formation if it is noted that the metal/is being fractured at any point under the forces of expansion. If a crack or break-is discovered at any time, vthe blank-maybe removed and slightfraoture closedlby We`ld-.

ing, Whereas ifn the expanding forces are continued, the fracture is likely to increase 'to such degree as to render the blank worthless, or, at best, ditlicultv and expensive to ifurthermore, I have infview im proved means for utilizing hydraulic pres` sure for actuating the expanding mechanism. i x

My invention will be morereadilyr understood by reference to the accompanying drawings, forming a part of this specifica-- tion, in Which-w Figure 1 is a central vertical section of a machine' embodying my invention; 2 is a horizontal section taken substantially on the line 2 2 of Fig. 1, and Figs. 3 and 4 are vSpecifieaton of Letters Patent.y

i' perspective views machines forr described.. y y i. .Referring non the .drawings in detail, viiurrleral 1 1 reitera o'agpreferablyCircular hase lplate wl'iiclimay be; sii'p 'portedv in any of hereiuaftefu) I preferably fourfpgos'ts'uor bolts- 12,112 is a xplate; 13, havingaiicular fitting Within,whichv is. the removable ring 14.-`

This ring isv p'rolvidedi` with'. a .horizontal up'pen` Harige l5 projectingoyerftlie edge of oricein the plate .13, Whelfbysaid vring is supported, and fittingwithin this 'ring is an inner ring orapertnred cap.A 16 .having ,i

ashoulderl'? uilichfcoperates with an inner flange .18 ongt-hering ,-l4,toinsure the desired positional; y relationshipg yoff these meinbers for thepurpos'es hereinafter der sc rvibedv: *nM-"4;" i t i ,y l.Sec/,u i'gel. i bolted. to the-.plat

sions of, t e bolts f12 12is.acasinggeflwhich includes. the cylinder 19, .the ends .ofwhich are `sealed jbymeans of, :th e .heads 20 and 2'1.

.Within .this cylinder are mounted the oppositelyacting pistons 22; and,j23, vlthe piston 22l b ei'ngf'mounted atthe endzoff the pistonrod 24 andthe iston\23 beingfprovided with atubular ro 24,1,whch forms a sleeve P011 the rod-24h l f f v. Surrounding the rpistonrlrolcil betv'veenthe plate 1 1y and ,the plate13,is; anexpander.` or formermadeupof `aplurality-of seg- .90 corresponding in I ments-Q 25.l Eachiofthesesegments has a curved exterior lface, curvature to'v the desired curvature ofL a section of thebilge-barrel body ofcorresponding, area. Interiorly, thesevsegments are providedwith .radiallygdisposed wings or `flanges-2626; the internal edgeszof-Which taper fromf a wider. middle rtion'27in each directionto thetop and ottoni ofthe segment-s," thus formingl inclined planes adapted t-o- `be operated' against by the conical wedge-blocks y28 and.29, respectively.`

i Thewedge-block28 is'rigidlymounted at l the top of the pieton-rod 24, and upon downward "movement -of said-f rod the inclined facesA of' this block actagainst the upper inclined ledges of the flange's'QG-.of the exv pander-se'gments, while theincliiledifaces of the lower wedgeblock 29 similarly act upon the correspondingly inclined-lowerfedges of these flanges. "This lower wedge-block 29 is rigidly secured to the upper end ofthe tubular piston-rod 24", and it will now be apparent that if through movement of said piston-` rods in opposite directions said wedge-blocks are forced toward each other, they will have the eii'ect of radially expanding the segments 25A 25. The lowerends of thesefsegments are supported in radially disposed grooves 30 30 in the plate 11, while the upper ends are supported. in 'corresponding grooves 31 31 inthe inner ring 16, whereby movement .of said segments is limited to a' radial direction.' f

In their normal positions,'the pistons 22' and 2 3 are in-close proximity to' each other inder, respectively, havin at substantially the middle ofthe cylinder 19.l At this'portion ot the cylinder, I provide a duct`32 into which'is directed the end of a suitable-pi e 33 leading from the :pressure ehambero any suitablehydraulic pressure generator.- 'Duets 34 and .35 are pro- Vided in the top and bottom heads of the cyltions through pipes 36.an 37 with the presy sure generator. lAll of these pipes are provided withvalves (not shown) which may. v

be' voperated 'y in the usual and well-known manner tojshut oft the pressure and open the` same4 for the discharge of liquid from the chambers'withinthe cylinder.- It' will now be apparent' thatwith'these control valves in the pipes 36 and 3 7 in an open l condition, thel direction ot liquid pressure through the pipe1 33 and-,into the chamber between the istons, will subject these pistons to oppositely' 4directed forces which w-ill raise the upper and depress the lower piston. This, as explained, operates through the pisi ton-rodstoforce the'wedge-blocks 28l and .29 .toward each other and separate the seg.

ments 25 25 to expandthev former in the manner described. 4When in itsmost con--4 'traeted cond1t1`on,'the maximum middle d1- ameterof this segmental former is slightly less than the internal diameter of the4 cylindrical blank which it is proposed to expand tothe desired shape. W'henin'its most expanded condition, this former 1s externally 'of substanti'allyt-he same size' and. configuration -as the body. portion of the bilge-barrel. It will be apparent that when this expander is in its 'most contracted condition, the ring 14 having een removed, a cylindrical metal blank `38 may be placedV over the expander. lTheiower end `of this blank, which is to constitute one ot the. barrel ends or chines,l is held against expansion by the 4shoulder 39 in the plate-11. The ring 14 being replaced,

the upper end of the plank, which is to constitute the other barrel end or chine is v'fee held against expansion by the ring 14. Suitable liqu-id under pressure now b eing d1.- rected. through the pipe 33 and into the chamber between the pistons.21 and 22,v the wedge-blocks'28 and 29 will be t'oreed Vtoward i each other and the segments'25 expanded in the manner described, thus expandingthe similar connecv middleiportion of the blank to givethe same space which would otherwise be let't between'two segments when the expander is in its' most expanded condition. The .upper portion of one of these segments is clearly shown in Fig. 4. l'

After the completion of the forming operation, when itis desired to contract the former for the withdrawal of the formed body and the positioning of another blank,

the pipe 33 is opened-and liquid under pressure is directed through the pipes 36 and 37 to force the pistons 23 and 22 .toward eachother. 'Each of the wedge-blocks 28 and 29 is provided with a pluralityof arms 41, one ot' these farnis being provided onv each wedge-block for each ot'said segments. Each of thesel armsv 41 is provided with a lug or pin 42 which projectsinto a groove 43 in the wing or liange 2 6 of eaclrsegment. Each 4o't.thesewiiigs 26 is provided with two of these grooves 43, one extending npwardly from vthe lowerA end thereof, into which projects a pin 42011 an arm 41 projecting upwardly from'the lower wedgeblock, and oneon the opposite side of said wing extendlng downwardly from the uplsubstantially the configuration of the exper end thereof, into which projects a pin at the end 'of an arm projectingdownwardly from the upper wedge-block. These grooves are so inclined thatwhen the wedge-blocks are forced together to expand the, segments, these pins 42 follow the courses of the grooves, and when said wedge-blocks are forced away trom each other, these arms and pins have the effect of drawing the-segments toward each other to contract the expander o r former.

For mounting the inner ring 1G in its proper position to t'orm a guiding member ,for the segments 25 during their expansion,

I prefer to employ a plurality ot'v rods 44,

extending vertically through a corresponding number ot openings in said ring and in the base plate l1, said rods being` threaded at their ends and provided with nuts 45 and 'l-( exteriorly ot' said members lo and 1], respectively.

lt. is well known, ot' course, to all skilled in thisart,thatin order to s vnlinetrieall \v expand the .cylindrical sheet-steel blank to the form piovibed. great pressure is neceslsary and this pressure must be substan-` tially uniformly distributed throughout the interior area of the blank. lNith respect to the present invention, it will be noted,iirst, thatl have provided a construction which enables me to emplspy hydraulic pressure,

and thus generate and apply almost limitless forces, and this in a simple a nd effect-ive manner; second, that substantially the whole of the exterior surface of the blank is exposed to i view dnrln the entire expandlng operation,v

whereby w ien a fracture or a tendency to fracture is noted, due possibly to some imperfection in the metal, theV expanding operation may be instantly terminated and theY blank removed for repair or for strengthening at a weak spot, Whereas if an exterior mold or former is employed a 'fracture would not be discovered until aftercompletion of the forming operation, at which,

time repairs would be much more diiiicult it not at times impossible; third, that while l have rovided a segment-al expander-I have so lnterfitted the segments together as to provide a substantially continuous forming or expanding surface evenvvhen a form is in its most expanded condition, thus preventing the longitudinal ridges which would be likely to be formed if the segments were completely separated from each l other; fourth, that in doing away with an exterior mold or former, l have provided a machine y in which the scale and other refuse matter which falls from the blank during the process of expansion may be removed after each operation without the necessity for the removal oi an exterior casing or the provision of apertures in the lower plate for`v4` the disposal of this scale or refuse; fifth, that i have provided means for utilizing the' hydraulic pressure referred to lfor returning the segments of the expander from their expanded to their most contracted condition,

, thus quickly and easily readjusting the mawhich it appertains, and l therefore do not desire to limit my invention to the specific construction herein shown and4 described.

l claim as new and desire to secure by Letters Patent:

l. A machine for forming the body por@ tions of metal bilge-barrels from cylindrical blanks, comprising annular supporting members rigidly secured to and held at a pan'sible former f within said blank, said former being'of bilgejshapeand having ends of substantially cylindrical configuration, said ends fitting in and coperating with said a'nnulai1 members Whenith'e former is expanded. z 2. A machine -forl 1forming body portions of metal bilge-barrels from:I cylindrical blanks-comprising annular supporting mem- 4bers rigidlyfsecuredA toand held 'at a fixed ydistance' fromeach otherand 'fitting the .ends of the'fblank exteriorly, and an: ex-

pansiblel former withinsaid blank," said former beingv of rbilge shape. and' having ends ofzsubstaritially cylindrical configuration, 'said ends fitting .in Land?.coperati'ng with said annular v'members when the former is expandedandoneiof said members being the yformed blah-k." gff' I 'removable to ipermitgofthe- Withdrawal vof tions of metal bilge-barrels from cylindrical blanks, comprising annular support-ing members rigidly secured to andheld at a fixed distance-from each other and fitting the ends. of the blank exteriorly, a segmental former Within saidblank, said former being of bilge yshape with ends ofsubstantially cylindrical conliguration, and means for separating the segments to have the eliect of expanding said former the ends of which vfit Ivvithinfand coperate with said annular members'when said former is expanded.

4. A- machine for forming the body portions of metal bilge-barrels from cylindrical blanks, comprising annular supporting members rigidly secured to and held at a fixed distance from each other and fitting the ends of the blank exteriorly, a segmental former within said blank, said former being of bilge shape with ends of substantially cylindrical lconguration,` and means for separati-ng the segments to-have the effect of expanding said former the ends of which fit within and coperate with said annular' members when said former is expanded, and one of said members being removable to permit of the withdrawal of the formed blank. l

5. ln a machine for forming the body portions of metal bilge-barrels, the combination of a former comprising a plurality of separate segments, said former when expanded having substantially the size and shape of the desired bilge-barrel body, each of said segments being provided withA oppositelydisposed inclined faces, wedge-blocks between and common to all of said segments and coperating with said faces to separate said segments radially from'each other to have theefiect of expanding said former` a cylinder havingoppositely acting pistons therein, connecting means between said pisfixed distance from each other and fittin tons and said WedUe-blocks to simultanel l n D I n c e5 tine ends o1' the blank exteriorly, and an ex'- ously move said Wedge-blocks 1n opposite dii. `i:"- ffif 85 .3. A machinefor forming thegbody Aporr reet'ions, and means for 'admitting liquid un-l der pressure into 4said cylinder to actuate A machine for forming the body p0rtions '-metal bilge-barrels from cylindrical blanks; comprising annular supporting members rigidly secured to and held at a fixed distance from each other and fitting the ends of the blank exteriorly, a segmental l y-former located `Wholly Within said blank f eacli'siegment of lwhich is provided with oppositely disposed inclined surfaces, means movable on said surfaces to `impart relai [tively radial 'movementsto said sevments aiidhave the efeetof expanding s'aidormer andstretch the metal between the blank ends `thereover, and conne'cting'gmeais' between said movable means and said 'segments to re- U i turn vsaid former to its normally-eontractedV P condition.

i. machine for forming the body portions of metal blge-barrels from eylindri.

cal blanks, comprising a lower supporting member and an. upper supporting member rigidly secured thereto at a fixed distance therefrom, each of said members being providedv with a suitable seat to receive and retain the end portions of the blank, and

means for expanding the blank between the ends thereof to the 4desired bilge shape, said seat in said upper. member being provided by a removable ring to permit of Withdrawal of the formed blank.

I nA testimony of the foregoing, I have hereunto set my hand in the presence of two 

